Encyclopedia of the Korean War (Revised)

Although it has been largely neglected, the Korean War served as the backdrop for many firsts in military history: the first extensive use of the helicopter, the first battles between jet aircraft, and the first time two world powers - the United States and China - met on a battlefield since World War II. A 1953 armistice halted the fighting, yet the war technically continues today, as North and South Korea remain divided.